Dickensian school match! (7)
I believe the answer is:
podsnap
'dickensian' is the definition.
(I've seen this before)
'school match' is the wordplay.
'school' becomes 'pod' (term for a group of marine mammals).
'match' becomes 'snap' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'pod'+'snap'='PODSNAP'
Can you help me to learn more?
(Other definitions for podsnap that I've seen before include "Literary philistine" , "Smug Dickensian" , "Mutual Friend pompous businessman" , "How pompous Dickensian" .)